I had been tinkering around with an idea to better handle the hand opened 2♣ in standard and 2/1 GF, with the idea of a strong 2♦ ("♦" = diamonds) to show an unbalanced hand with spades (and strong). After I worked out the kinks, I was informed that Anders Wirgren and Johan Bennet had come up with this idea years ago. I was tickled, but disappointed that my "innovation" was already spotted and developed. Nothing new under the sun perhaps.
That said, I cannot find any write-up of the newest version (called "Pioneer," apparently). But, I found a Swedish-language version of the slightly older "Super Standard," upon which Pioneer is apparently based, with an explanation of their approach.
Because I really like the idea, I did a rough translation. Some of the follow-up bidding is not developed but logical to work out, and some of the "translation" is tweaked (because these are personal notes more than a translation). But, for those who cannot read Swedish and are not as weird as me (I used a word-by-word translator at points), but who may be interested, I have attached my notes hereto. I think that this approach has great potential. The cost is the weak 2♦ opening, but many have ditched that anyway. The gain is that strong hands now are not a liability and patterns can be handled properly.
My "translation" is broken down into hand-type categories, to all analysis in such a way as to see the parallel structure (you will understand as you read this), which makes memory work lesser. It seems very logical.
My own version seemed a bit more fluid at points, but this version seems to handle some patterns better. I handled balanced hands much better, at the cost of handling minor two-suiters and generally two-suiters without quite the same definition (at least initially). The Swedish version, in all, seems slightly better. I'm curious to see whether the Pioneer notes solved some of my concerns or not. (Anyone have this?)
Anyway, here goes:
Majors, after Positive Waiting (2♣-P-2♦ or 2♦-P-2♥):
Heart-focus hand types:
1. heart-minor canapé
2. 5-5 hearts plus a minor
3. 6-5 hearts plus a minor
4. single-suited hearts (6322+)
5. hearts-minor, shorter in minor
Spade-focus hand types:
1. spade-minor canapé
2. 5-5 spades plus a minor
3. 6-5 spades plus a minor
4. single-suited spades (6322+)
5. spades-minor, shorter in minor
6. 5+ hearts, 4+ spades spades only (2♦)
7. 5+ spades, 4 hearts spades only (2♦)
With category #1 (major-minor canapé):
Open 2♣ with hearts, and then bid 3♣/3♦
Open 2♦ with spades, and then bid 3♣/3♦
With category #2 (5-5 major-minor):
Open 2♣ with hearts, and then flag the minor (3♥=5♥/5♣; 3♠=5♥/5♦)
Open 2♦ with spades, and then flag the minor (3♥=5♠/5♣; 3♠=5♠/5♦)
With category #3 (6-5 major-minor):
Open appropriate minor, then jump in minor (4♣/4♦)
With category #4 (single-suited hand) or #5 (major, plus shorter minor):
Open 2♣ with hearts, and then bid 2♠
Open 2♦ with spades, and then bid 2♠
With category #6 (spades only – 5+♥/4+♠)
Open 2♦ and then bid 2NT.
Rebid 3♠ later with 5-5
Rebid 3♥ later with 4-5♠, 6♥
With category #7 (5+♠/4♥):
Open 2♦, rebid 2♠, introduce hearts later
Handling Minors after Positive Waiting:
Open 2♣. Responder’s 2♦ is waiting.
With both minors (5-4/4-5 or greater, no 4-card major), bid 2NT next.
Responder might bid 3♣ as “stayman,” asking for a three-card major, if any.
Responder might instead flag a minor of choice for slam interest.
With a one-suited minor:
Opener rebids 2♥, sort of like Kokish, but without hearts.
(Opener will have one minor, or some 4441’s, or balanced)
After 2♠, Opener rebids his minor. Will not be 5-4 in minors, but might be 6-4. No side 4-card major, though.
Note: Responder can reject “Kokish” by showing a minor or minors:
-2NT shows diamonds. Opener, with clubs, bids 3♣. With diamonds, the celebration begins.
-3♣ shows clubs. Opener, with diamonds, bids 3♦. With clubs, the celebration begins.
-3♥/3♠ shows 5-5, bidding stiff
Handling 4-4-4-1 hands after Positive Waiting:
With 4-1-4-4 and BIG (24+), open 2♦ and then rebid 3NT.
With 1-4-4-4 and BIG (24+), open 2♣, then “Kokish” 2♥, and then rebid 3NT.
With 1-4-4-4 and decent (21-23), open 2♣ and immediately rebid 3NT.
After all three above:
4♣ = shows a weak hand and is a relay to 4♦. Responder will pick the suit contract, or 4NT as general quantitative invite to possible 6NT contract.
4♦ = major slam try (LTTC)
4♥ = club slam try (RKCB?)
4♠ = diamond slam try (RKCB?)
4NT = RKCB for the major
With 4-1-4-4 and decent (21-23), treat as balanced. Life sucks.
With 4-4-4-1 or 4-4-1-4, open 2♣, then “Kokish” 2♥, then flag the stiff minor.
3♥ = 4-4-4-1 3♠ = 4-4-1-4
Handling Balanced Hands after Positive Waiting:
Open 2♣. After 2♦, bid 2♥ as “Kokish” parallel. After 2♠, bid 2NT.
Response structure will be the same. Puppet and the like. Frequent super-acceptances encouraged. “Super-accept” of 3NT to a transfer is BIG balanced.
Note: We may want to scrap/modify the 2♣…2NT as minors. That would make 2♣…2♥…2NT 24+ and 2♣…2NT 22-23.
If so, then a “one-suited minor” could be 5-5 minors. No great solution, but perhaps better than lumping all of the balanced hands together.
Wirgren-Bennet alleviated the strong, balanced to some degree by establishing:
1. 2NT open is 22-23
2. 2♣…2♥…2NT is then 19+ to 21 OR 24+
This split range may be easier to handle than 22+ plus would be.
After the 2♦ opening and a Negative Rebid:
If Responder has 4+ spades (and thus a fit), he bids 3♥. This shows an intention to pass 3♠ or a bare minimum raise to 4♠. Opener bids 3♠ is not interested in slam under these conditions, or 4♠ is game-only no matter what, or 3NT/other as slam tries (other=natural). 3NT just gives room for cues of values, if any.
If Responder has 0-3 spades, he will bid 2♠, which can be passed. Or:
2NT through 3♦ = transfer to next-up suit. Opener might pass or continue pattern description.
3♥ = also a transfer, showing 6+ spades
3♠ = 24+, with 4-1-4-4
3NT = To play
4♣/4♦ = BIG 5-5
4♥ = BIG 4♠/6+♥
4♠ = To play
After the 2♣ opening and the Two-Way Double Negatives:
2♥ shows double negative and 0-3 hearts
2♠ shows double negative and 4+ hearts
If Opener has hearts, 2♠ gives him lots of information. If he does not have hearts, Opener will have a one-suited minor, both minors, or balanced. Thus:
2NT = Balanced, not four hearts (might be 21-23 and 4-1-4-4)
3♣/♦ = One-suited minor or light both minors; passable
3♥ = To play
3♠ = Strong both minors
3NT = Best guess contract (to play)
4♣/♦ = BIG minor
4♥ = To play
If Opener lacks hearts (2♥):
Opener can pass.
Opener can make any bid as above, except…
2NT shows BIG hand (24+)
A. 22-23 (or 20-21 if…)
C. Heart GF
After 2♠, Responder usually bids 2NT, after which Opener:
A. Passes with weak balanced
B. Bids minor with 5-4/5-5
C. Bids 3♥ GF, 6+ hearts
D. Bids 4♣/4♦ with STRONG 5-5
After 2♣ opening:
2NT = Positive with Spades
3♣/♦/♥ = Positives, natural
After 2♦ opening:
2NT shows heart positive
3♣/3♦ shows minor positive
Note = 3♥ shows negative with spades; 4bids would be minimal splinters with spade support
After these positives, logical bidding. Possibly splinters.
 Responder can bid 3♦ (transfer) or splinter to support hearts.
3♥ by Responder is described as a bare bust heart acceptance and passable, but I don’t see the merits. Makes more sense to me as a power raise, with something in all side suits (Ace, King, Stiff, and/or maybe one suit Queen-only).
Describes 2NT as a general denial of fit/waiting, after which Opener bids:
1. a minor (3♣/3♦(
2. rebids hearts
3. 3♠ for 0544, or
4. 4minor as strong 6-4.
Responder’s 3♣ shows a minor without hearts. Opener can ask (3♦, flag answer) or bid own way (naturally).